US3405887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring wing tension vehicle
Assignee: National Aeronautics and Space Administration
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Filing: 1966-10-10
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Granted: 1968-10-15
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Expires: 1986-10-10
Abstract
No abstract record available.
Inventors
- 👤 John S Mixson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:15
CPC Classifications
B; B64; B64C; B64C39/00; B64C39/06; B64G; B64G1/00; B64G1/10; B64G1/105; B64G1/1064; B64G1/1071; B64G1/22; B64G1/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |